Version 0.80beta2 (20060527)

This commit is contained in:
Olaf Rempel 2006-05-27 12:52:20 +02:00
parent dcee58ebd2
commit 31b7584b2f
2 changed files with 189 additions and 185 deletions

4
main.c
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@ -1,7 +1,7 @@
/*****************************************************************************
*
* AVRPROG compatible boot-loader
* Version : 0.80beta (May 2006)
* Version : 0.80beta2 (May 2006)
* Compiler : avr-gcc 3.4.6 / avr-libc 1.4.4
* size : depends on features and startup ( minmal features < 512 words)
* by : Martin Thomas, Kaiserslautern, Germany
@ -45,7 +45,7 @@
// programmers-notepad tabsize 4
#define VERSION_HIGH '0'
#define VERSION_LOW '7'
#define VERSION_LOW '8'
/* MCU frequency */
#define F_CPU 7372800

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======================================================
ATMEL AVR UART Bootloader for AVR-GCC/avr-libc
based on the AVR Butterfly bootloader code
by Martin Thomas, Kaiserslautern, Germany
mthomas@rhrk.uni-kl.de
eversmith@heizung-thomas.de
http://www.siwawi.arubi.uni-kl.de/avr_projects
Addtional code and improvements provided by
Uwe Bonnes, Bjoern Riemer and Olaf Rempel.
======================================================
Programming-Software (on the "PC-Side"):
* AVRProg (included in AVRStudio) available at www.atmel.com.
MS-Windows only. AVRProg can be used as stand-alone application.
(avrprog.exe)
* avrdude available at http://savannah.nongnu.org/projects/avrdude/
"Multiplattform"
21. May. 2006 - Version 0.8beta
Version contributed by Olaf Rempel. He has done a lot of modifications.
-> "cleaner code", smaller binaries.
09. Feb. 2006 - Version 0.75
* additional STARTUP_WAIT support contributed by Bjoern Riemer
18. Aug. 2005 - Version 0.74
* AT90CAN128 support contributed by Uwe Bonnes
* Makefile modifications contributed by Uwe Bonnes
23. Feb. 2005 - Version 0.7
* (Version 0.6 has never been available on the web-page)
* ATmega128 support
* code cleanup
* Tested with ATmega8, ATmega32 and ATmega128
7. Apr. 2004 - Version 0.5
* added different startup-methods
* compatible with ATmega8 now
* included makefile adopted to ATmega8 now
(ATmega16 options still available)
* fixed jump to application which did not work
reliably before
* tested with ATmega8
* minimal options and startup-code result in
bootloader-size < 512 words
6. Apr. 2004 - Version 0.4
* Buffered read of chars from UART during programming
since eeprom-write is too slow for unbuffered
operation. So EEPROM-upload does work now.
* Added BOOTICE-mode to flash JTAGICE-compatible
hardware (ATmega16@7,3Mhz) (if you know about BOOTICE,
you may unterstand why this has been added, if not
just keep the option disabled)
* small changes in (my)boot.h (lock-bit-mask) found
out during the development of the STK-500-compatible
bootloader. But setting lock-bits still does not
work with this bootloader.
* read of the low-fuse byte works (high byte still TODO)
* read of the lock-byte works (write still TODO)
27. Mar 2004 - Version 0.3
Felt that as much functions from avr-libc's boot.h
as possible should be used without modifications.
Latest CVS-version of boot.h is included.
Only the read-routine is still "self-made" based
on ATMELs assembler-code.
EEPROM write on Mega16 does not work (and did not
work with V0.2 too). May be caused by my old Mega16
chip. Needs testing. Flash read/write and EEPROM
read works. Still only tested with ATmega16.
This version may not work with the ATmega169 any
more.
24. Mar 2004 - Version 0.2
During the development of a data-logger application
with the AVR-Butterfly there was a need to make
some changes in the bootloader. The same problem
again: no IAR compiler. The same way to solve the
problem: a port of the code to avr-gcc/avr-libc.
So this code is based on the ATMEL Butterfly
bootloader source code Rev 0.2 for IAR.
The bootloader-port for the Butterfly which mimics
the complete functionality of the original
BF-bootloader is availabe at:
www.siwawi.arubi.uni-kl.de/avr_projects
Atmel used a separate "lib" written in "pure"
assembly to access the low-level functions
for flash read/write. Well, so far I
don't know how to use "mixed language sources"
with the avr-gcc toolchain, so the low-level
routines have been implemented as inline assembler.
The avr-libc boot.h module written by Eric
Weddington served as a template Three of the four
low-level routines found in lowlevel.c come from
boot.h with minimal changes. The read routine has
been developed based on the ATMEL assembler code.
Ignore the fuse and lock-bit readout. Read and Set is
not enabled (TODO).
--------------- Installation -----------------
- Change the MCU type in the makefile (so far
ATmega16 has been tested, ATmega169, ATmega8
and ATmega32 should be o.k. too.
- Change the boot(loader)-size in Makefile, this
bootloader is larger than 512 words (1024 bytes),
so select at least _B1024!
- Change the XTAL in Makefile to the clock-frequency
of your board (keep BAUDRATE at 19200). See
the datasheet for frequencies with minimum
error at 19200bps and select Crystal/Oscillator
to get minimum errors.
- Change the start-condition in Makefile. Default
is: enter bootloader if Pin A7 is connected to
GND during reset/startup
- Please use at least avr-gcc 3.3.1/avr-libc 1.0
or WINAVR Sept. 2003 or later to compile and link
the bootloader.
- upload the hex-File to the AVR (STK500, STK200, SP12
etc.)
- program the "Boot Flash section size" (BOOTSZ fuses)
according to the boot-size selected in main.c
i.e. BOOTSZ=00 for boot-size 1024 words on ATmega16
- enable the BOOT Reset Vector (BOOTTRST=0)
- Set the lock bits to protect the bootloader from
SPM-writes (Boot Loader Protection Mode 2 in STK500-
plugin)
- Connect the AVR UART Pins via level-shifter/inverter
(i.e. MAX232) to you PCs Com-Port.
- Reset the AVR while fullfilling the bootloader start-
condition. Which means connect PA7 to GND in the default
config during reste/power-cycle. Keep the connection
or hold the key down until you see the AVRPROG dialog!
- Start AVRPROG (AVRStuido/Tools or stand-alone) -
keep PA7 grounded! (avrdude is supported too, check
the avrdude manual for command-line options).
- AVRPROG will detect the bootloader, you may release
PA7 now
- see AVRStuido online-help for more information how
to use AVRPROG
- make sure to EXIT from AVRPROG (button) to start
your main-application (or toogle power/reset)
good luck, feedback welcome.
Martin
======================================================
ATMEL AVR UART Bootloader for AVR-GCC/avr-libc
based on the AVR Butterfly bootloader code
by Martin Thomas, Kaiserslautern, Germany
mthomas@rhrk.uni-kl.de
eversmith@heizung-thomas.de
http://www.siwawi.arubi.uni-kl.de/avr_projects
Addtional code and improvements provided by
Uwe Bonnes, Bjoern Riemer and Olaf Rempel.
======================================================
Programming-Software (on the "PC-Side"):
* AVRProg (included in AVRStudio) available at www.atmel.com.
MS-Windows only. AVRProg can be used as stand-alone application.
(avrprog.exe)
* avrdude available at http://savannah.nongnu.org/projects/avrdude/
"Multiplattform"
27. May 2006 - Version 0.8beta2
More improvements contributed by Olaf Rempel.
21. May 2006 - Version 0.8beta
Version contributed by Olaf Rempel. He has done a lot of modifications.
-> "cleaner code", smaller binaries.
09. Feb. 2006 - Version 0.75
* additional STARTUP_WAIT support contributed by Bjoern Riemer
18. Aug. 2005 - Version 0.74
* AT90CAN128 support contributed by Uwe Bonnes
* Makefile modifications contributed by Uwe Bonnes
23. Feb. 2005 - Version 0.7
* (Version 0.6 has never been available on the web-page)
* ATmega128 support
* code cleanup
* Tested with ATmega8, ATmega32 and ATmega128
7. Apr. 2004 - Version 0.5
* added different startup-methods
* compatible with ATmega8 now
* included makefile adopted to ATmega8 now
(ATmega16 options still available)
* fixed jump to application which did not work
reliably before
* tested with ATmega8
* minimal options and startup-code result in
bootloader-size < 512 words
6. Apr. 2004 - Version 0.4
* Buffered read of chars from UART during programming
since eeprom-write is too slow for unbuffered
operation. So EEPROM-upload does work now.
* Added BOOTICE-mode to flash JTAGICE-compatible
hardware (ATmega16@7,3Mhz) (if you know about BOOTICE,
you may unterstand why this has been added, if not
just keep the option disabled)
* small changes in (my)boot.h (lock-bit-mask) found
out during the development of the STK-500-compatible
bootloader. But setting lock-bits still does not
work with this bootloader.
* read of the low-fuse byte works (high byte still TODO)
* read of the lock-byte works (write still TODO)
27. Mar 2004 - Version 0.3
Felt that as much functions from avr-libc's boot.h
as possible should be used without modifications.
Latest CVS-version of boot.h is included.
Only the read-routine is still "self-made" based
on ATMELs assembler-code.
EEPROM write on Mega16 does not work (and did not
work with V0.2 too). May be caused by my old Mega16
chip. Needs testing. Flash read/write and EEPROM
read works. Still only tested with ATmega16.
This version may not work with the ATmega169 any
more.
24. Mar 2004 - Version 0.2
During the development of a data-logger application
with the AVR-Butterfly there was a need to make
some changes in the bootloader. The same problem
again: no IAR compiler. The same way to solve the
problem: a port of the code to avr-gcc/avr-libc.
So this code is based on the ATMEL Butterfly
bootloader source code Rev 0.2 for IAR.
The bootloader-port for the Butterfly which mimics
the complete functionality of the original
BF-bootloader is availabe at:
www.siwawi.arubi.uni-kl.de/avr_projects
Atmel used a separate "lib" written in "pure"
assembly to access the low-level functions
for flash read/write. Well, so far I
don't know how to use "mixed language sources"
with the avr-gcc toolchain, so the low-level
routines have been implemented as inline assembler.
The avr-libc boot.h module written by Eric
Weddington served as a template Three of the four
low-level routines found in lowlevel.c come from
boot.h with minimal changes. The read routine has
been developed based on the ATMEL assembler code.
Ignore the fuse and lock-bit readout. Read and Set is
not enabled (TODO).
--------------- Installation -----------------
- Change the MCU type in the makefile (so far
ATmega16 has been tested, ATmega169, ATmega8
and ATmega32 should be o.k. too.
- Change the boot(loader)-size in Makefile, this
bootloader is larger than 512 words (1024 bytes),
so select at least _B1024!
- Change the XTAL in Makefile to the clock-frequency
of your board (keep BAUDRATE at 19200). See
the datasheet for frequencies with minimum
error at 19200bps and select Crystal/Oscillator
to get minimum errors.
- Change the start-condition in Makefile. Default
is: enter bootloader if Pin A7 is connected to
GND during reset/startup
- Please use at least avr-gcc 3.3.1/avr-libc 1.0
or WINAVR Sept. 2003 or later to compile and link
the bootloader.
- upload the hex-File to the AVR (STK500, STK200, SP12
etc.)
- program the "Boot Flash section size" (BOOTSZ fuses)
according to the boot-size selected in main.c
i.e. BOOTSZ=00 for boot-size 1024 words on ATmega16
- enable the BOOT Reset Vector (BOOTTRST=0)
- Set the lock bits to protect the bootloader from
SPM-writes (Boot Loader Protection Mode 2 in STK500-
plugin)
- Connect the AVR UART Pins via level-shifter/inverter
(i.e. MAX232) to you PCs Com-Port.
- Reset the AVR while fullfilling the bootloader start-
condition. Which means connect PA7 to GND in the default
config during reste/power-cycle. Keep the connection
or hold the key down until you see the AVRPROG dialog!
- Start AVRPROG (AVRStuido/Tools or stand-alone) -
keep PA7 grounded! (avrdude is supported too, check
the avrdude manual for command-line options).
- AVRPROG will detect the bootloader, you may release
PA7 now
- see AVRStuido online-help for more information how
to use AVRPROG
- make sure to EXIT from AVRPROG (button) to start
your main-application (or toogle power/reset)
good luck, feedback welcome.
Martin